What to do when the machine “jams!”

Posted by on June 2, 2014

Bam! Don’t you just hate that sound? And then the machine is locked up.

The first thing to do is stay calm 99% of the time it is only a fuzzy or thread jam.

PHOTO1A PHOTO1B

If you are in computer mode—save your layout. Don’t worry, you can get back to where you were in the pattern if you save the layout. Then turn everything off.

Go to the back of the machine and grab on to the fly wheel and see if there is any play in the motion of the wheel. In simple terms, rock the wheel back and forth and see if you can get it to free up. Don’t force it; you don’t want to turn the hook on the shaft into another position. You can be firm with it but, let’s check some other things before we go to brutal force.
PHOTO2Rock the fly wheel to get motion between the hook and race to help clear out threads.

Take the bobbin case out.
PHOTO3
Take the needle out. You might have to unscrew the needle bar screw to get the needle out—and it might be that you have to take the needle out to get the bobbin case out.

PHOTO4Look in the bobbin basket area and see if there are any threads or fuzzies that you can clear out. Pull them out and use a tweezers if necessary. Then use a lint brush and really work at it to get every bit out that you can.

Oil the bobbin basket/ hook. Oil it until the oil can saturate the fuzzy. Sometimes you will need to let the oil set for a while. Rock the fly wheel a little and then re oil in sequences so that you can work the oil into the fuzzy.

PHOTO5A PHOTO5B PHOTO5COil at the top          Oil on the left        Oil on the right

Try to get oil between the outer part of the hook and the inner part that is called the race. That is generally where the fuzzy is. Our plan is to oil up the fuzzy and when it is greasy enough we will be able to turn the fly wheel and spin the fuzzy out.

PHOTO6Now begin to rock the fly wheel. You will know if you are making headway by how far you can rock it back and forth. It is definitely a fuzzy or thread jam if you can get the fly wheel to respond and loosen up. I remember that I once had to rock that fly wheel 500 times to get the oil worked into the fuzzy so it would then turn.

Once you get the fly wheel turning free, you can turn the machine on without any needle or bobbin case and spin the fuzzys and extra oil out.

It is possible that during the initial thread jam the hook could be turned on the shaft. You will know that this has happened if you cannot get a full rotation of the needle without hitting the hook. You will also know if you are slightly out of time if you begin sewing and skip stitches. If the hook is no longer synchronized with the needle then check out one of the timing videos on our website or YouTube channel, or look in the manual for timing instructions.

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